From owner-freebsd-chat@FreeBSD.ORG Wed May 4 16:40:57 2005 Return-Path: Delivered-To: freebsd-chat@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 9AE5116A4CF for ; Wed, 4 May 2005 16:40:57 +0000 (GMT) Received: from wproxy.gmail.com (wproxy.gmail.com [64.233.184.198]) by mx1.FreeBSD.org (Postfix) with ESMTP id E770E43D5E for ; Wed, 4 May 2005 16:40:47 +0000 (GMT) (envelope-from carlsonmark@gmail.com) Received: by wproxy.gmail.com with SMTP id 69so218139wra for ; Wed, 04 May 2005 09:40:20 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=MetoQChtSY7ODdCWt3NnPw0nDetz9/wuDrF36emkwSq3TogafSGVgr8YXCf2NkjjmK6r0RhiBo9JPw0h9ZXBQ1auKs/LCIb+edZb4VxIE1iQKlxkn2/CYqYmygtYt5dHaXPj/+2AM7fY6rA/tmuiII02QBwC1mbmQlz04/fnt/s= Received: by 10.54.106.7 with SMTP id e7mr395331wrc; Wed, 04 May 2005 09:40:20 -0700 (PDT) Received: by 10.54.13.2 with HTTP; Wed, 4 May 2005 09:40:20 -0700 (PDT) Message-ID: Date: Wed, 4 May 2005 10:40:20 -0600 From: Mark Carlson To: freebsd-chat@freebsd.org In-Reply-To: <20050503120030.5912116A4D3@hub.freebsd.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline References: <20050503120030.5912116A4D3@hub.freebsd.org> Subject: Re: freebsd-chat Digest, Vol 109, Issue 2 X-BeenThere: freebsd-chat@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: Mark Carlson List-Id: Non technical items related to the community List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 04 May 2005 16:40:57 -0000 > Hmmm... Any one know if it's possible to get a speed controlled fan for a > 3Com III Switch? Mine is going bad and since it's located in the living r= oom > makes for some slight problems. I've yet to tear the thing apart mostly > because it's in a live environment. (Almost said production but > realistically all I produce is crap. :) > -- > Rick Hamell If I read that right, you want to make a noisy fan quieter by reducing its speed? If the fan just started being noisy, that would be a really bad idea, as the fan _will_ fail sometime soon. A better solution in that case would be to just buy a new fan (although they are not the easiest ones to find.) Any fan controller should work, however, as the fans are just regular ones that are ~60mm (at least on the two 3Com switches I have opened up.) You may have to do some hacking and slashing to get it in there, and you may need one capable of controllng two, as some of those 3Com switches have two fans in them. The good news is that there is usually plenty of free space inside the box to play around with, just be careful not to obstruct the air flow. One more thing to note: The fans are usually mounted right between the power supply and the rest of the circuitry, and although it looks like they are just used to cool the power supply, those other chips get mighty warm sometimes.